Sunan an-Nasa'i 425
سنن النسائي#425SahihIt was narrated from Jubair bin Mut'im that mention of Ghusl was made in the presence of the Prophet (ﷺ) and he said:"As for me, I pour water on my head three times
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 4:30